Temperature requirements for the production of aluminium foil bags

Temperature requirements for the production of aluminium foil bags

Aluminium foil bags are a new type of packaging product that can be widely used for the centralised packaging of a wide range of goods. The temperature requirements in the manufacture of aluminium foil bags are quite large, what are the regulations on temperature in the production of aluminium foil? The following will be detailed in the production process of aluminum foil bags, according to the temperature can be divided into the following two stages.

1, warming stage as long as the steam delivery to the maintenance room 1 ~ 1.5 hours, aluminum foil bag heating time should be shortened.

2、Aluminium foil bag constant temperature stage: the constant temperature stage is an important stage in which hydration and hydrothermal synthesis of the billet occurs and the strength grows. With the extension of the thermostat time, hydride more and more gathered, strength growth is also increasingly fast. However, after the constant temperature reaches a certain time, the strength growth starts to slow down. Different raw material formulation, different production process, the manufactured gas circuit control module has a relative excellent temperature control time. For example, the constant temperature time is 8 hours in spring and autumn, 7 hours in summer and 10 hours in winter under humid and hot conditions of 96 to 100°C. When the temperature reduction link is great, the indoor space design is not enough, the door should be opened and should be cooled quickly, which in turn causes the temperature difference ground stress of the plastic film, which in turn is able to pull Shen surface layer and produce micro cracks. Therefore, must control the aluminum foil bag cooling speed, every 30 minutes of cooling should not exceed 10 ℃; maintenance of the temperature difference between indoor and outdoor is not greater than 30 ℃, the finished PE stretch film can only be out of the room.